<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

        :root {
            --primary-color: #3a86ff;
            --primary-gradient: linear-gradient(135deg, #3a86ff 0%, #4361ee 100%);
            --accent-color: #ff006e;
            --accent-gradient: linear-gradient(135deg, #ff006e 0%, #ff5e78 100%);
            --dark-color: #1a1a2e;
            --light-color: #ffffff;
            --gray-100: #f8f9fa;
            --gray-200: #e9ecef;
            --gray-300: #dee2e6;
            --gray-400: #ced4da;
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
            --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--dark-color);
            color: var(--light-color);
            min-height: 100vh;
            padding: 40px;
        }

        .container {
            max-width: 1440px;
            margin: 0 auto;
        }

        .header {
            text-align: center;
            margin-bottom: 60px;
            opacity: 0;
            animation: fadeInUp 0.6s ease forwards;
        }

        .header h1 {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 16px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .header p {
            font-size: 18px;
            color: var(--gray-300);
            max-width: 600px;
            margin: 0 auto;
        }

        .promo-grid {
            display: grid;
            gap: 40px;
            margin-bottom: 60px;
        }

        .promo-item {
            background: rgba(255, 255, 255, 0.03);
            border-radius: 24px;
            padding: 30px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            opacity: 0;
            animation: fadeInUp 0.6s ease forwards;
        }

        .promo-item:nth-child(2) {
            animation-delay: 0.2s;
        }

        .promo-item:nth-child(3) {
            animation-delay: 0.4s;
        }

        .promo-title {
            display: flex;
            align-items: center;
            margin-bottom: 24px;
        }

        .promo-title-number {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            margin-right: 16px;
        }

        .promo-title-text {
            font-size: 20px;
            font-weight: 600;
        }

        .promo-dimensions {
            color: var(--gray-400);
            font-size: 14px;
            margin-left: auto;
        }

        .promo-canvas {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            transition: transform 0.3s ease;
        }

        .promo-canvas:hover {
            transform: translateY(-5px);
        }

        .hero-banner {
            width: 100%;
            height: 560px;
            background: var(--primary-gradient);
            position: relative;
            overflow: hidden;
        }

        .hero-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            z-index: 2;
        }

        .hero-title {
            font-size: 64px;
            font-weight: 700;
            margin-bottom: 24px;
            opacity: 0;
            animation: fadeInUp 0.6s ease forwards 0.6s;
        }

        .hero-subtitle {
            font-size: 24px;
            color: rgba(255, 255, 255, 0.9);
            opacity: 0;
            animation: fadeInUp 0.6s ease forwards 0.8s;
        }

        .hero-shapes {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            opacity: 0.3;
        }

        .shape {
            position: absolute;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .shape-1 {
            width: 300px;
            height: 300px;
            top: -100px;
            left: -100px;
        }

        .shape-2 {
            width: 200px;
            height: 200px;
            bottom: -50px;
            right: -50px;
        }

        .small-promo {
            width: 440px;
            height: 280px;
            background: var(--accent-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .small-promo-content {
            text-align: center;
            z-index: 2;
        }

        .small-promo-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .small-promo-subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
        }

        .screenshot-preview {
            width: 1280px;
            height: 800px;
            background: var(--gray-100);
            position: relative;
            border-radius: 16px;
            overflow: hidden;
        }

        .browser-chrome {
            height: 48px;
            background: var(--light-color);
            border-bottom: 1px solid var(--gray-300);
            display: flex;
            align-items: center;
            padding: 0 16px;
            gap: 8px;
        }

        .browser-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .browser-dot-red { background: #ff5f57; }
        .browser-dot-yellow { background: #ffbd2e; }
        .browser-dot-green { background: #28c940; }

        .extension-window {
            position: absolute;
            top: 60px;
            right: 20px;
            width: 400px;
            background: var(--light-color);
            border-radius: 16px;
            box-shadow: var(--shadow-xl);
            overflow: hidden;
            animation: slideIn 0.6s ease forwards;
        }

        .extension-header {
            padding: 20px;
            background: var(--primary-gradient);
            color: var(--light-color);
        }

        .extension-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .extension-subtitle {
            font-size: 14px;
            opacity: 0.9;
        }

        .extension-content {
            padding: 20px;
        }

        .shortcut-grid {
            display: grid;
            gap: 16px;
        }

        .shortcut-item {
            display: flex;
            align-items: center;
            padding: 16px;
            background: var(--gray-100);
            border-radius: 12px;
            color: var(--dark-color);
        }

        .shortcut-keys {
            display: flex;
            gap: 8px;
            margin-right: 16px;
        }

        .key {
            background: var(--light-color);
            border: 1px solid var(--gray-300);
            border-radius: 6px;
            padding: 4px 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--dark-color);
            box-shadow: var(--shadow-sm);
        }

        .shortcut-label {
            font-size: 14px;
            color: var(--dark-color);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateX(40px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .floating {
            animation: floating 3s ease-in-out infinite;
        }

        @keyframes floating {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
            100% { transform: translateY(0px); }
        }
    </style>
</head>
<body>
    <div class="container">
        <header class="header">
            <h1>VideoSnap Pro</h1>
            <p>Chrome Web Store 宣传素材展示</p>
        </header>

        <div class="promo-grid">
            <div class="promo-item">
                <div class="promo-title">
                    <div class="promo-title-number">1</div>
                    <div class="promo-title-text">顶部宣传图块</div>
                    <div class="promo-dimensions">1400 x 560</div>
                </div>
                <div class="promo-canvas">
                    <div class="hero-banner">
                        <div class="hero-shapes">
                            <div class="shape shape-1"></div>
                            <div class="shape shape-2"></div>
                        </div>
                        <div class="hero-content">
                            <h2 class="hero-title">VideoSnap Pro</h2>
                            <p class="hero-subtitle">捕捉每一个精彩瞬间</p>
                        </div>
                    </div>
                </div>
            </div>

            <div class="promo-item">
                <div class="promo-title">
                    <div class="promo-title-number">2</div>
                    <div class="promo-title-text">小型宣传图块</div>
                    <div class="promo-dimensions">440 x 280</div>
                </div>
                <div class="promo-canvas">
                    <div class="small-promo">
                        <div class="hero-shapes">
                            <div class="shape shape-1"></div>
                            <div class="shape shape-2"></div>
                        </div>
                        <div class="small-promo-content">
                            <h3 class="small-promo-title">VideoSnap Pro</h3>
                            <p class="small-promo-subtitle">视频帧捕获工具</p>
                        </div>
                    </div>
                </div>
            </div>

            <div class="promo-item">
                <div class="promo-title">
                    <div class="promo-title-number">3</div>
                    <div class="promo-title-text">截图模板</div>
                    <div class="promo-dimensions">1280 x 800</div>
                </div>
                <div class="promo-canvas">
                    <div class="screenshot-preview">
                        <div class="browser-chrome">
                            <div class="browser-dot browser-dot-red"></div>
                            <div class="browser-dot browser-dot-yellow"></div>
                            <div class="browser-dot browser-dot-green"></div>
                        </div>
                        <div class="extension-window floating">
                            <div class="extension-header">
                                <div class="extension-title">VideoSnap Pro</div>
                                <div class="extension-subtitle">快捷操作面板</div>
                            </div>
                            <div class="extension-content">
                                <div class="shortcut-grid">
                                    <div class="shortcut-item">
                                        <div class="shortcut-keys">
                                            <span class="key">Option</span>
                                            <span class="key">S</span>
                                        </div>
                                        <div class="shortcut-label">复制到剪贴板</div>
                                    </div>
                                    <div class="shortcut-item">
                                        <div class="shortcut-keys">
                                            <span class="key">Option</span>
                                            <span class="key">Shift</span>
                                            <span class="key">S</span>
                                        </div>
                                        <div class="shortcut-label">保存到文件</div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>
</html>
